Climate

Arctic report card: Permafrost thawing faster than before
A new report finds permafrost in the Arctic is thawing faster than ever before. The annual report card also finds water is warming and sea ice is melting at the fastest pace in 1,500 years at the top of the world.
UN weather agency: 2017 set to be among top 3 hottest years
The World Meteorological Organization says this year is already on track to be one of the three hottest years of all time, after 2015 and 2016, which were both affected by a powerful El Nino effect, which can contribute to higher temperatures.
Pope blasts climate change doubters, cites moral duty to act
Pope Francis has sharply criticized climate change doubters, saying history will judge those who failed to take the necessary decisions to curb heat-trapping emissions blamed for the warming of the Earth.
Researchers search for clues to toxic algae blooms
It's the dog days of summer in Minnesota, which means warm lakes and an uptick in reports of toxic blooms of algae across the state. Scientists are working to identify what triggers the algae.
Greenland is still burning, but the smoke may be the real problem
Wildfires are still burning in western Greenland, close to the Arctic island's ice sheet. As the fires burn, they release black particles that can coat the ice and snow, and make it melt more quickly.